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Finding the Fourth Proportional to 340.26, 469.31 and 223.62

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Solution

The fourth proportional to 340.26, 469.31 and 223.62 is: 308.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.26 : 469.31 = 223.62 : x
  2. Step 2: Convert to fraction form
    340.26/469.31 = 223.62/x
  3. Step 3: Cross multiply
    340.26x = 469.31 × 223.62
  4. Step 4: Simplify right side
    340.26x = 104,945.98
  5. Step 5: Solve for x
    x = 104,945.98/340.26
  6. Step 6: Final answer
    x = 308.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.